[analyzer] Check that a member expr is valid even when the result is an lvalue.
We want to catch cases like this early, so that we can produce better
diagnostics and path notes:
Point *p = 0;
int *px = &p->x; // should warn here
*px = 1;
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164441 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/nullptr.cpp b/test/Analysis/nullptr.cpp
index 050c3f8..80ef5fb 100644
--- a/test/Analysis/nullptr.cpp
+++ b/test/Analysis/nullptr.cpp
@@ -23,10 +23,11 @@
};
char *np = nullptr;
// casting a nullptr to anything should be caught eventually
- int *ip = &(((struct foo *)np)->f);
- *ip = 0; // expected-warning{{Dereference of null pointer}}
- // should be error here too, but analysis gets stopped
-// *np = 0;
+ int *ip = &(((struct foo *)np)->f); // expected-warning{{Access to field 'f' results in a dereference of a null pointer (loaded from variable 'np')}}
+
+ // Analysis stops at the first problem case, so we won't actually warn here.
+ *ip = 0;
+ *np = 0;
}
// nullptr is implemented as a zero integer value, so should be able to compare